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Fully passive third-order noise shaping SAR ADC.
- Source :
-
Electronics Letters (Wiley-Blackwell) . 4/13/2017, Vol. 53 Issue 8, p528-529. 2p. - Publication Year :
- 2017
-
Abstract
- In this Letter, an opamp-free noise shaping successive-approximation register (SAR) ADC is proposed. Third-order noise shaping is achieved by implementing a second-order passive filter and a passive error feedback topology. In the proposed scheme, the SAR error signals (including quantisation noise, comparator thermal noise, DAC thermal noise and settling error) are subjected to third-order noise shaping. Therefore, the thermal noise specifications of the comparator can be relaxed. Also, since no active element is used, the proposed scheme achieves a higher power efficiency than earlier SAR ADCs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00135194
- Volume :
- 53
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Electronics Letters (Wiley-Blackwell)
- Publication Type :
- Academic Journal
- Accession number :
- 122461878
- Full Text :
- https://doi.org/10.1049/el.2017.0318